Adjusting device for crushers



atented Feb. 12, 1%24.

HARVEY S. ANDERSON, OF GERMAN'IOWN, OHIO.

anJUs'rIne DEVICE. stilt citiisfinas.

Application filed July 25, 1916. seriai n. 1"11,142.

To all whom it may] concern:

Be it known that I, HARVEY SANnEnsoN, a citizen of the United Statesresidingiat Germantown, in the county of Montgomery and State of Ohio,have invented certain new and useful Improvements in Adjusting Devicesfor Crushers, of which the following is a specification.

My invention relates to crushers for rocks, ore, or other materials andmore particularly to an adjusting or spacing device for crushers of therotary disc type.

The object of the invention is to simplify the structure as well as themeans and mode of operation of the adjusting or "spacing means for thecrushers or other devices whereby they will not only be cheapened inconstruction, but will be more efficient in use, 1

capable of being easily and quickly adjusted, economical, positive andunlikely to get out of repair.

A further object of the invention is to provide improved means wherebyany desired degree of adjustment may be secured.

With the above primary and other incidental objects in view, as willmore fully appear in the specification, the invention consists of thefeatures of construction, the parts and combinations thereof, and themode. of operation, or their equivalents, as

, hereinafter described andset forth in the y claims. i

Referring to the drawings, 1 is a longitudinal sectional view of aportion of a disc crusher towhich the invention forming I the subjectniatter'hereofhas'been applied. Two forms .of embodiment of theinvention are shown in Fig. 1. Fig. 2 is a longitudinal sectional viewof the adjusting means or spacer forming the subject matter hereof. Fig.3 is a similar view of a modification "of thespacer or adjusting device. Fig. 4 is a detail view of a modification of sleeve hereinafterreferred to.

Like parts are indicated bysiinilar char-J acters ofreference-throughout the several ;.the core.

' views. 7 Referring to the drawings, rotary head of the crusher inwhich is loosely mounted the shaft 2 carrying the rotary head 3 and thecrusher disc 4:. Arranged in substantially. parallel relation with themain rotary head 1 is a second head 5 ad ustable the spacer l is the.main rotate in unison independent of andhead3. h j Themain orprimarycrusher'disc his given a gyratory or wobbling movement wherebyits periphery i's caused "to approach the shaft and recede' from thatofthe secondary disc 6. The materialto be crushed is introduced betweenthe discs 4 and 6- through theconcentric orifice? and is carried bycentrifugal tendency toward the peripheries ofsaid discs. Therelativemovement of the discs "due to'the wobble movement of theprimary'OllSC causes the material-to be caught and crushed between the adjacentfaces of the dlscs'. The crushed material is discharged b-ycent ifugaltendency from the peripherie of said discs; A

In practice there is considerable J wear upon the discs'which must becompensated forby the lateral adjustment of the head 5 toward the mainhead 1. As shown in Fig. '1 and also Fig.2 the head 5 and main head 1areconnected'one to the other by transverse bolts 8. It has heretoforebeenthe practiceto interpose a'number of washers or shims of variousthicknesses which would be successively removed to permit the.adustme'nt'of the head 5. By the use of washers or shims onlypredetermined degrees of adjustment may beattained, 1 dependent upon thethickness" of thelshimaor washer removed Furthermorep inasmuch: as a I"number of bolts '8; are located in :spacedvre lation about the head; 5,such procedure involves considerable amount of "labor. and requires longperiods oftime -to effect the necessary{adjustmentg To overcome thedifficulty provided intermediate the main-headla sleeve 9 surroundingthe bolt 8. This; sleeve 9; preferably comprises a heretoforeexperienced there is heads 5 and the steel or iron core 9 having ahardened; ex-

terior shell or surface 9 preferably of man ganese steel. Such aconstruction may be effected by first "forming the core 9? andthereafter casting a manganese shell about screw threaded to receive ascrew threaded sleeve 1.0.also mounted upon the bolt 8 and engagingwithin the counter bore of the sleeve 9. (The screw threadedsleeve 10 isThe sleeve 9 is counterbored and provided with a head 11 for theengagement of a wrench or spanner by whichitmaybe turned upon the bolt 8and within the screw threaded counter bore of sleeve p 9, V A

locking nut 12 screw threaded upon the sleeve 10 serves to secure theparts in adj usted position. I

The manganese or hardened sleeve 9 is of such extent as to projectbeyond the point of discharge of the discs 4 and 6 whereby thedischarged material will strike the hardened surface of the sleeve whichwill not be materially affected thereby. As shown in Fig. 1, theadjusting portions of the spacer or adjusting member are ofiset inrelation with the discharge point of the crusher where they cannot beinjured by the discharged material. In the event that it is desired toadjust the crusher discs one toward the other to compensate for wear thenuts 13 of the bolt 8 are slightly/"loosened and the lock nut 12 is alsoslightly relieved whereupon the screw threaded sleeve 10 may be rotatedby means of a wrench or spanner to screw the sleeve an additionaldistance into the main sleeve 9, thereby shortening the distance betweenthe opposite ends ,of the sleeves 9 andlO'. All of the spacer devicesabout the head 5 having been adjusted to the desired degree, the locknuts 12 are then tightened to hold the sleeve 10 in adjusted positionand the nuts 13 are tightenedto draw the head 5 toward the main head 1and into contact with the shortened spacer comprising the interengagedsleeves 9 and 10. Inthe event that it is desired to set the head 5outward to accommodate new crushing discs of greater thickness,the nuts12 and 18 are loosened and the screw threaded sleeve 10 is rotated tounscrew it from the sleeve 9, thereby extending the spacer member. s

In lieu of the integral sleeve 9 comprising an integral steel or ironcore and a manga nese shell, as before described, the core and shell maybe formed separate as shown in Fig. 4. In this construction the shell 9may be renewed from time to time while the core is continued in use.

In Fig. 3 there is shown a modification of the construction beforedescribed in which the sleeve 14 comprising a steel or iron core and amanganese exterior is provided with an integral stud 15 screw threadedfor the engagement of a nut 16 by which it is secured to the head of themain head 1. The interior of the sleeve 14 is screw threaded to receivea screw threaded stud 17 having a head or shoulder 18 adapted to engagethe inner face of the head 5 and a screw threaded extension 19 extendingthrough the head 5 and carrying at the outer side thereof a nut 20. Inthis construction, by releasing the nut 20 and applying a wrench orspanner to the head 18 the stud may be rotated in its bearing in thehead 5 to extend its screw threaded extremity a greater or less distanceinto the screw threaded bore of the sleeve 14, thereby drawing thepartsl and 5 toward each other or forcing them apart according to thedirection of rotation of the stud 17. To accommodate the shoulder orhead 18 in an extreme position of adjustment the sleeve 14 may berecessed as at 21.

In lieu of adjusting the studs 17 to vary the relation of the heads 1and 5, the stud may remain locked in the head 5 by the nut 20 and thenut 16 upon the stud 15 may be loosened and a wrench or spanner appliedto the sleeve 14 to rotate said sleeve audits integral stud 15 in itsbearings within the main head 1 to cause the sleeve to be screwed agreater or less distance upon the stud 17.

It will be seen that by this construction the operator is not limited toany definite or arbitrary degrees of adjustment as in the case of theuse of washers or shims and that the parts may be securely locked in anyposition of adjustment within the limits of the device. The operationsof adjusting the devicemay be easily and quickly performed withconsiderable saving of labor and time. The device herein described maybe incorporated in new machines at the time of manufacture or it may beapplied to machines already installed and in use.

While this invention has been designed for and is here described inconnection with rock or ore crushing apparatus, it is to be understoodthat it may be applied to other devices and is not limited to suchassociation.

There is indicated at 22 in Figs. 1 and 2 a brace or stay ring whichconnects each spacer member with the adjacent spacer members. This staymember is not essential to the successful operation of the spacer de.vice and may therefore be omitted. However, to permit the use of thisstay or bracing member, if desired, the sleeve 9 is ofisetor shoulderedas at 24 and the stay member is provided with a series of holes, one foreach of the sleeves 9, within which the projecting end of the sleeveengages. The lock nut 12 bears upon the retaining or staying member 23serving to connect the-several spacer members rigidly one with theother. In the event that the stay or bracing member is omitted, theshoulder or ofiset 24 is likewise omitted from the sleeve 9.

From the above description it will be apparent that there is thusprovided a device of the character described possessing the particularfeatures of advantage before enumerated as desirable but which obviouslyis susceptible of modification in its form, proportion, detailconstruction, or arrangement of parts without departing from theprinciple involved or sacrificing any of its advantages.

While in order to comply with the statute the invention has beendescribed in language more or less specific as to certain structuralfeatures, it is to be understood that the means and construction hereindescribed comprise but one mode of putting the invention into effect andthe invention is therefore claimed broadly in any of its possible formsof modifications within the scope of the appended claims.

Having thus described my invention, I claim:

1. A crusher of that type involving two relatively movable headsarranged in spaced relation, one of which is provided with a peripheralshoulder, characterized by an internally screw threaded sleeve abuttingupon the inner or adjacent face of one of said heads and extendingentirely across the intervening space between said heads and overhangingthe peripheral shoulder of the other head, an externally screw threadedmember abutting upon the inner or adjacent face of the shouldered headand adjustably engaging within the screw threaded bore of said sleeve tolimit the approach of said heads one toward the other, and limitingmeans preventing the separation of said heads.

2. A crusher of that type involving two relatively movable heads one ofwhich is provided with a peripheral shoulder, said heads beinginterconnected one with the other by bolts, characterized by twointerengaged screw threaded sleeves mounted upon one of said boltsbetween said heads and forming an adjustable spacer for limiting theapproach of said heads one toward the other, one of said sleeves beingabutted upon one of said heads and overhanging the peripheral shoulderof the other head.

3. A crusher of that type involving two relatively movable heads havinga bolt interconnecting the heads one with the other characterized by anexternally threaded sleeve loosely journaled upon the bolt and bearingat one end upon one of said heads, and an internally screw threadedsleeve engaging at one end the other ofsaid heads and within the screwthreaded interior of which the first mentioned sleeve is adj ustablyengaged, said sleeves being adjustable in relation one with the other toform an adjustable spacer to limit the approach of said heads, said lastmentioned sleeve being of greater length than the intervening spacebetween the adjacent faces of said heads.

4. A crusher of the type involving two relatively adjustable headshaving adjustable spacer means intermediate the heads characterized byan internally screw threaded sleeve engaging one of the heads, andoverhanging the periphery of the other head and an externally screwthreaded member engaging the other of said heads at one end andinterengaged with said sleeve whereby the relative adjustment of saidsleeve and member will vary the limit of approach of said heads onetoward the other.

In testimony whereof, I have hereunto set my hand this 19th day of June,A. D..

HARVEY S. ANDERSON. Witnesses:

CARRIE M. REoKER, Eow. E. DUNCAN.

